feat: ASG rolling deploy モジュール内のパラメータを変数にする

ch8.production-grade-infrastructure/modules/cluster/asg-rolling-deploy/main.tf

@@ -13,13 +13,7 @@ resource "aws_launch_configuration" "example" {
   image_id        = var.ami
   instance_type   = var.instance_type
   security_groups = [aws_security_group.instance.id]
-
-  user_data = templatefile("${path.module}/user-data.sh", {
-    server_text = var.server_text
-    server_port = var.server_port
-    db_address  = data.terraform_remote_state.db.outputs.address
-    db_port     = data.terraform_remote_state.db.outputs.port
-  })
+  user_data       = var.user_data
 
   # ASG がある起動設定を使う場合は必須
   lifecycle {
@@ -31,10 +25,10 @@ resource "aws_autoscaling_group" "example" {
   name = var.cluster_name
 
   launch_configuration = aws_launch_configuration.example.name
-  vpc_zone_identifier  = data.aws_subnets.default.ids
+  vpc_zone_identifier  = var.subnet_ids
 
-  target_group_arns = [aws_lb_target_group.asg.arn]
-  health_check_type = "ELB"
+  target_group_arns = var.target_group_arns
+  health_check_type = var.health_check_type
 
   min_size = var.min_size
   max_size = var.max_size

ch8.production-grade-infrastructure/modules/cluster/asg-rolling-deploy/variables.tf

@@ -41,3 +41,26 @@ variable "server_text" {
   type        = string
   default     = "Hello, World"
 }
+
+variable "subnet_ids" {
+  description = "Subnet IDs to deploy to"
+  type        = list(string)
+}
+
+variable "target_group_arns" {
+  description = "ARNs of ALB target groups in which to register Instances"
+  type        = list(string)
+  default     = []
+}
+
+variable "health_check_type" {
+  description = "health check to perform. Must be one of: EC2, ELB"
+  type        = string
+  default     = "EC2"
+}
+
+variable "user_data" {
+  description = "User Data script to run in instance at boot"
+  type        = string
+  default     = null
+}